Bone align and joint preparation device and method

Patent metadata

Field	Value
Publication number	US-11849933-B2
Application number	US-202117238920-A
Country	US
Kind code	B2
Filing date	Apr 23, 2021
Priority date	Apr 24, 2020
Publication date	Dec 26, 2023
Grant date	Dec 26, 2023

Abstract

A bone displacement system includes an anchoring portion, a tool engaging portion, a compression distraction mechanism, a lateral body and a distal body. The anchoring portion has an aperture for receiving a wire to connect the anchoring portion to a proximal bone. The tool engaging portion is connected to the anchoring portion and is configured to connect a tool thereto. The compression-distraction mechanism is connected to the anchoring portion. The lateral body is connected to the compression-distraction mechanism by a ratchet. The lateral body has a downwardly depending portion for contacting a lateral bone. The distal body is connected to the compression-distraction mechanism. The distal body has an aperture for receiving a wire to connect the distal body to a distal bone. The compression-distraction mechanism is configured to move the anchoring portion relative to the distal body.

First claim

We claim:

1. A bone displacement system comprising:
an anchoring portion having an aperture for receiving a wire to connect the anchoring portion to a proximal bone;
a tool engaging portion connected to said anchoring portion and configured to connect a tool thereto;
a compression-distraction mechanism connected to said anchoring portion;
a lateral body connected to said compression-distraction mechanism, said lateral body having a downwardly depending portion for contacting a lateral bone; and
a distal body connected to said compression-distraction mechanism, said distal body having an aperture for receiving a wire to connect the distal body to a distal bone, and said compression-distraction mechanism configured to move said anchoring portion relative to said distal body, said distal body comprising a trolley having a mobile portion movably connected to a rail to allow said mobile portion to move laterally relative to a longitudinal axis of said compression-distraction mechanism;
said trolley comprising a screw engaging the rail and the mobile portion to allow movement of the mobile portion and the distal bone relative to the lateral bone when a user drives said screw, the distal body connected to the distal bone and the anchoring portion connected to the proximal bone.

2. The system of claim 1 wherein said tool comprises a paddle, the paddle releasably connected to the tool engaging portion and receivable between the proximal bone and the distal bone for locating the anchoring portion relative to the proximal bone and said distal body relative to the distal bone.

3. The system of claim 1 wherein said tool comprises a cut guide releasably connected to the tool engaging portion and having a first cut slot and a second cut slot for cutting the proximal bone and/or the distal bone.

4. The system of claim 3 wherein the first cut slot and the second cut slot have longitudinal axes substantially parallel to each other.

5. The system of claim 1 wherein said compression-distraction mechanism is connectable to the proximal bone by the anchoring portion and the distal bone by the distal body, said compression-distraction mechanism configured to move the proximal bone relative to the distal bone.

6. The system of claim 5 wherein said compression-distraction mechanism comprises a rack and the screw is engageable by a user to cause movement of the mobile portion relative to the rack to cause a compression or a distraction of the proximal bone relative to the distal bone when the proximal bone is connected to the anchoring portion and the distal bone is connected to the distal body.

7. The system of claim 1 wherein the distal body comprises a third aperture to receive a third wire to connect the distal body to the distal bone.

8. The bone cut guide of claim 1 wherein the rail has a rail longitudinal axis, the mobile portion engaged with a rack and the rack having a rack longitudinal axis, said rail longitudinal axis and said rack longitudinal axis being about perpendicular to each other.

9. The system of claim 1 wherein the lateral body is connected to said compression-distraction mechanism by an arm.

10. The system of claim 1 wherein the lateral body is connected to said compression-distraction mechanism by a holding member that inhibits movement of the lateral body relative to the compression-distraction mechanism.

11. A method for use in bone displacement, comprising:
inserting a first wire through an anchoring portion of a bone displacement mechanism into a first bone;
releasably connecting an alignment paddle to the bone displacement mechanism;
inserting the paddle between the first bone and a second bone;
inserting a second wire through a distal body of the bone displacement mechanism distal to the anchoring portion into the second bone distal to the first bone; and
moving the distal body and the second bone toward a lateral body of the bone displacement mechanism located laterally relative to the distal body and the anchoring portion to adjust an alignment of axes of the first bone and the second bone relative to each other;
wherein the distal body is connected to the anchoring portion and the literal portion by an intermediate body, the intermediate body connected to the lateral body by a ratchet connector and the moving the distal body and the second bone toward the lateral body comprises ratcheting the intermediate body toward the lateral body on the ratchet connector.

12. The method of claim 11 wherein the distal body is connected by the second wire through an aperture of a mobile portion of the distal body to the second bone, and further comprising moving the mobile portion on a rail of the distal body toward the lateral body to rotate the second bone about an axis of the second bone.

13. The method of claim 12 wherein the moving the mobile portion comprises providing a force by a second paddle of the lateral body depending downwardly against a third bone.

14. The method of claim 12 further comprising releasably connecting a bone cut guide to the bone displacement mechanism and cutting the first bone through a slot of the bone cut guide and cutting the second bone through a second slot of the bone cut guide.

15. The method of claim 14 further comprising distracting the second bone relative to the first bone by moving an arm mobile portion of the intermediate body on a rack of the intermediate body, the arm mobile portion connected to the rail such that the moving the arm mobile portion moves the distal body and the second bone.

16. The method of claim 15 further comprising compressing the second bone toward the first bone by moving the arm mobile portion of the intermediate body on the rack proximally toward the anchoring portion.

17. The method of claim 16 further comprising releasably connecting a screw guide to the bone displacement mechanism and connecting the first bone to the second bone by a screw through the screw guide.

18. The method of claim 17 further comprising releasably connecting a second paddle to the lateral body depending downwardly and contacting a third bone.

19. The method of claim 18 wherein the moving the distal body and the second bone toward the lateral body comprises providing a force by the second paddle against the third bone to allow the ratcheting of the intermediate body toward the lateral body.

20. The method of claim 15 wherein the rail and the rack have longitudinal axes aligned about perpendicular to each other.

21. A bone displacement system comprising:
an anchoring portion having an aperture for receiving a wire to connect the anchoring portion to a proximal bone;
a tool engaging portion connected to said anchoring portion and configured to connect a tool thereto;
a compression-distraction mechanism connected to said anchoring portion;
a lateral body connected to said compression-distraction mechanism, said lateral body having a downwardly depending portion for contacting a lateral bone; and
a distal body connected to said compression-distraction mechanism, said distal body having an aperture for receiving a wire to connect the distal body to a distal bone, and said compression-distraction mechanism configured to move said anchoring portion relative to said distal body; and
wherein said tool comprises a paddle, the paddle releasably connected to the tool engaging portion and receivable between the proximal bone and the distal bone for locating the anchoring portion relative to the proximal bone and said distal body relative to the dis

Assignees

• Nextremity Solutions Inc
• Medartis Ag

Inventors

• Denham Greg
• Schlotterback Ryan
• Granger Daren

Classifications

• A61B17/025 Primary

  Joint distractors · CPC title

• A61B17/15

  Guides therefor · CPC title

• A61B17/151 Primary

  for corrective osteotomy · CPC title

• A61B17/1775

  for the foot or ankle · CPC title

• A61B2017/564

  Methods for bone or joint treatment · CPC title